2

LT1129/LT1129-3.3/LT1129-5

A

G

A

U

A

R

BSOLUTEXI

TI

S

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

Regulated Output Voltage

LT1129-3.3

3.250

3.300

3.350

V

(Notes 3,11)

q

3.200

3.300

3.400

V

LT1129-5

4.925

5.000

5.075

V

q

4.850

5.000

5.150

V

LT1129 (Note 4)

3.695

3.750

3.805

V

q

3.640

3.750

3.860

V

Line Regulation (Note 11)

LT1129-3.3

q

1.5

10

mV

LT1129-5

q

1.5

10

mV

LT1129 (Note 4)

q

1.5

10

mV

Load Regulation (Note 11)

LT1129-3.3

6

20

mV

q

15

30

mV

LT1129-5

6

20

mV

q

20

30

mV

LT1129 (Note 4)

6

20

mV

q

15

30

mV

ELECTRICAL C

C

HARA TERISTICS

Input Voltage ......................................................

±30V*

Output Pin Reverse Current ................................. 10mA

Sense Pin Current ................................................ 10mA

Adjust Pin Current ............................................... 10mA

Shutdown Pin Input Voltage (Note 1) ........ 6.5V, – 0.6V

Shutdown Pin Input Current (Note 1) .................. 20mA

Output Short-Circuit Duration ......................... Indefinite

Storage Temperature Range ................ – 65

°C to 150°C

Operating Junction Temperature Range (Note 2)

LT1129C-X ......................................... 0

°C to 125°C

LT1129C-X Extended Temperature Range

(Note 11) ....................................... –40

°C to 125°C

LT1129I-X ..................................... –40

°C to 125°C

Lead Temperature (Soldering, 10 sec) .................. 300

°C

* For applications requiring input voltage ratings greater than 30V, contact the factory.

PACKAGE/ORDER I FOR ATIO

T PACKAGE

5-LEAD TO-220

FRONT VIEW

SHDN

OUTPUT

SENSE/ADJ*

GND

TAB IS

GND

5

4

3

2

1

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5

= ADJ FOR LT1129

Q PACKAGE

5-LEAD DD

SHDN

GND

SENSE/ADJ*

OUTPUT

FRONT VIEW

5

4

3

2

1

TAB

IS

GND

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5

= ADJ FOR LT1129

1

2

3

4

8

7

6

5

TOP VIEW

OUTPUT

GND

NC

S8 PACKAGE

8-LEAD PLASTIC SO

GND

GND

SHDN

SENSE/

ADJ*

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5

= ADJ FOR LT1129

ORDER PART

NUMBER

PART

MARKING

LT1129CST-3.3

LT1129CST-5

LT1129IST-3.3

LT1129IST-5

LT1129CT

LT1129CT-3.3

LT1129CT-5

LT1129IT

LT1129IT-3.3

LT1129IT-5

LT1129CQ

LT1129CQ-3.3

LT1129CQ-5

LT1129IQ

LT1129IQ-3.3

LT1129IQ-5

1129

11293

11295

ORDER PART NUMBER

ORDER PART NUMBER

ORDER PART NUMBER

3

2

1

FRONT VIEW

TAB

IS

GND

OUTPUT

GND

ST PACKAGE

3-LEAD PLASTIC SOT-223

LT1129CS8

LT1129CS8-3.3

LT1129CS8-5

LT1129IS8

LT1129IS8-3.3

LT1129IS8-5

Consult factory for Military grade parts.